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Commissioning & Repair of Carbon Powder Briquette Machine

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Complete Practical Guide for Daily Maintenance, Commissioning & Repair of Carbon Powder Briquette Machine.

To extend service life, avoid blockages, malfunctions and production shutdowns of carbon powder briquette machines (carbon powder forming machines), standardized daily maintenance and precise parameter adjustment are critical.

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Common faults such as burnt motors, blocked machine heads and unstable briquette output rarely stem from poor equipment quality. Most are caused by inadequate routine maintenance and non-standard parameter setting.

Based on real workshop operation experience, this article covers core procedures including bearing lubrication, gap adjustment, full machine cleaning, component maintenance and main shaft straightening. The plain-language guide is easy for all workers to follow, prolonging equipment lifespan and stabilizing continuous output.

1. Bearing Lubrication Maintenance (Top Priority to Prevent Dry Friction Damage)

Bearings are core rotating components of the briquette machine. Insufficient lubrication leads to overheating, seizure and severe abrasion, halting production. Follow fixed lubrication cycles strictly:
  1. Rear bearing near coupling: Add lithium grease every three production shifts for smooth power transmission under high-frequency operation.
  2. Front working bearing: One grease filling per week is sufficient.
  3. Adopt No.3 lithium base grease, compatible with the machine’s high-temperature working environment.
  4. Inject No.20 or No.30 diesel engine oil through the 180° oil filler hole on the main shaft base to reduce rotation resistance.
An oil drain hole is reserved at the bottom of the bearing pedestal. Waste oil and impurities accumulate during long-term operation. Open the drain hole every 1–2 months to fully drain deteriorated oil before refilling new lubricant, preventing impurity-induced bearing wear.

2. Gap Adjustment Between Screw Blade & Machine Head (Determines Briquette Quality & Anti-blockage Effect)

The clearance between the screw blade discharge end and the machine head feeding hole controls briquette forming stability and operating current, a vital skill for new operators.
  1. Standard gap under normal production with qualified raw material moisture: Around 5 mm, producing dense briquettes with smooth discharging.
  2. If raw materials are overly wet, operating current is low and briquettes are loose and deformed: Widen the gap to 10–20 mm to relieve extrusion pressure and eliminate stalling and blockage.

3. Mandatory Full Machine Cleaning After Every Shutdown

Clean residual carbon powder inside the machine after every short stop or daily shutdown.

Carbon dust left inside hardens after cooling. Restarting with hardened residue jams the screw blade, causing light blockage and stalling, or severe damage including burnt motors and twisted main shafts. This neglected step causes the majority of machine failures.

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4. Standard Operating Rules for Machine Head & Component Replacement

Before installing new machine heads or disassembling accessories, thoroughly clear carbon particles and material crusts on the machine head joint surface and lock ring grooves to ensure clean contact surfaces free of debris.

Make full, tight contact between the machine head end face, shell edge and lock ring. Never strike forcibly or force-fit parts. Misaligned or poorly sealed heads cause vibration and offset briquette extrusion during operation.

5. Maintenance of Machine Joint Surfaces

Before disassembly and reassembly, wipe all carbon powder and impurities off the two split joint surfaces.

Trapped carbon particles result in loose joints, machine deformation and offset feeding hoppers. Long-term operation with poor fit reduces machining precision and shortens equipment service life drastically.

Carbon Powder Forming Machine

6. Residue Inspection When Relocating or Overhauling Equipment

Every time the machine is moved or fully inspected, check the punching plate and gear chamber bottom where material residue easily accumulates. Clear all buildup promptly. Hardened debris jams gears and abrades parts, which hinders flexible transmission system movement.

7. Maintenance Standards for Reducer & Fluid Coupling

  1. Reducer: Fill with dedicated 15-N320 long-shaft gear oil. Change oil strictly following the operation manual cycle to guarantee stable low-noise deceleration transmission.
  2. Models equipped with fluid coupling: Fill with special 200# hydraulic oil. Regularly inspect the coupling cooling outlet to ensure unobstructed heat dissipation, avoiding high-temperature pressure relief and transmission failure.

8. Main Shaft Bending Straightening (Core Overhaul Operation)

Long-term heavy-load operation bends and deforms the main shaft, triggering machine vibration, uneven briquette output, loud noise and reduced capacity. Standard straightening steps:
  1. Remove the machine shell and machine head accessories, then take out the main shaft.
  2. Precisely measure bending deformation with professional measuring tools.
  3. Straighten the shaft gradually according to deformation volume. Reinstall all components after correction to guarantee main shaft concentricity and vibration-free stable operation.

Summary

Carbon powder briquette machines are high-extrusion heavy-load equipment. Breakdowns arise from neglect rather than regular use.

Carry out periodic lubrication, rational gap adjustment, full post-shutdown cleaning and standardized component installation.

Blockages, burnt motors and defective briquettes will drop sharply, equipment failure rate is greatly reduced, and service life doubles. Regular maintenance cuts long-term operating costs and maintains steady production output.

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